Submission #44452

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
44452	2018-04-02 07:52:44	Yehezkiel	Svjetlost (COI18_svjetlost)	C++11	100 / 100	1181 ms	125008 KiB

Main

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#include <bits/stdc++.h>
using namespace std;
typedef long long lint;
typedef pair<int, int> pi;
const int MAXN = 100005;
int n;
pi a[MAXN];
double dist(pi a, pi b){
  return hypot(b.first - a.first, b.second - a.second);
}
lint ccw(pi a, pi b, pi c){
  int dx1 = b.first - a.first;
  int dy1 = b.second - a.second;
  int dx2 = c.first - a.first;
  int dy2 = c.second - a.second;
  return 1ll * dx1 * dy2 - 1ll * dy1 * dx2;
}
pi sub(pi a, pi b){
  return pi(b.first - a.first, b.second - a.second);
}
bool cmp(pi a, pi b){
  bool flg1 = a < pi(0, 0);
  bool flg2 = b < pi(0, 0);
  if(flg1 != flg2) return flg1 < flg2;
  return ccw(pi(0, 0), a, b) > 0;
 
 
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Compilation message (stderr)

svjetlost.cpp: In function 'int main()':
svjetlost.cpp:77:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
svjetlost.cpp:78:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=0; i<n; i++) scanf("%d %d",&a[i].first,&a[i].second);
                         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
svjetlost.cpp:86:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&q);
  ~~~~~^~~~~~~~~
svjetlost.cpp:89:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&x);
   ~~~~~^~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 14 / 14
• Subtask 3: 14 / 14
• Subtask 4: 29 / 29
• Subtask 5: 31 / 31